The selective chemicals in the CNA blood agar are
A. Colistin & Nalidixic Acid
B. Chloramphenicol & Nitrofurazone
C. Colistin & Nitrofurazone
D. Cloxacillin & Nalidixic Acid
E. Chloramphenicol & Nalidixic Acid
Ans: A. Colistin & Nalidixic Acid
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Which best describes the effect of positive assortative mating in a population?
a. It causes natural selection. b. It increases homozygosity. c. It changes allele frequencies. d. It stabilizes genotype frequencies. e. It produces more mutations each generation
What were the major disadvantages of our early ancestors becoming bipedal?
A. Decrease in speed and mobility. B. Lower back problems developed. C. Increased predation by faster predators. D. Decreased protection of the abdominal region.
Most oncogenes encode proteins that function in cell growth signaling pathways.
Answer the following statement true (T) or false (F)
Which of the following would you classify as a case of cultural evolution?
a. The males of brood parasitic birds (e.g., cuckoos) use the calls of their father after they have been raised in the nest of a host. b. The specific arrangement of keys on a keyboard of a computer that has been steadily gaining market share during the past decade. c. A parent offspring regression in catbirds yields a linear slope of 0.9 when the ability to acquire new calls is plotted. d. The cases made by the larvae of the same caddisfly species differ between different sections of the stream depending on the availability of construction materials.